中国城市林业2025，Vol.23Issue(6)：17-27,11.DOI:10.12169/zgcsly.2025.07.25.0003
高密度城市中行道树布局方式对街谷风环境的影响
Impact of Street Tree Configuration on Street Canyon Wind Environment in High-Density Cities:A CFD Simulation Based on Various Height-to-Width Ratios
摘要
Abstract
[Objective]This study is to reveal the context-dependent effects and aerodynamic mechanisms of street tree configurations on street canyon wind environment regulation in high-density cities,thereby providing a theoretical basis and practical references for climate-adaptive urban street tree layout planning.[Method]Computational Fluid Dynamics(CFD)method is employed to construct street canyon models with different height to width ratios(H/W)and two configuration patterns of street trees,i.e.,central single-row and two-sided double-row,are adopted to compare their differential impacts on wind speed distribution,pedestrian-level ventilation,and wind pressure on building surface.[Result]The enclosure degree of street canyons significantly influences the street trees'capacity of wind environment regulation.In the shallow street canyons with low H/W level,the central single-row arrangement can enhance the wind speed at the pedestrian level;under medium H/W conditions,the two-sided double-row arrangement effectively balances the wind speed distribution and reduces the wind pressure gradient;in deep street canyons with relatively high H/W level,the building sheltering effect however dominates the airflow distribution,in which the regulatory role of greening is limited.[Conclusion]The street tree's capacity to regulate the wind environment is clearly constrained by the street canyon's H/W.Future research could focus on multi-objective coupled optimization and model refinement,and the research scale could be expanded to the block level,so as to better serve the green space design in high-density cities.关键词
行道树/街谷/高宽比/风环境/绿化布局Key words
street tree/street canyon/aspect ratio/wind environment/green space arrangement引用本文复制引用
邓奇睿,崔冬瑾,李利孝..高密度城市中行道树布局方式对街谷风环境的影响[J].中国城市林业,2025,23(6):17-27,11.基金项目
国家自然科学基金面上项目(52378026) （52378026）
